At 22.11 hours on 9 Oct 1940, U-103 (Schütze) attacked convoy SC-6 37 miles north-northwest of Rockall and sank two ships, Zannes Gounaris and Delphin and damaged the Graigwen, which was later sunk by U-123 (Moehle).

The Delphin remained afloat and sank during the next day at 57°46N/13°50W.

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